Ray, M. L. (2004). The highest goal: The secret that sustains you in every moment. Berrett-Koehler.
芝加哥风格引文Ray, Michael L. The Highest Goal: The Secret That Sustains You in Every Moment. San Francisco, CA: Berrett-Koehler, 2004.
MLA引文Ray, Michael L. The Highest Goal: The Secret That Sustains You in Every Moment. Berrett-Koehler, 2004.
警告：这些引文格式不一定是100％准确.